Microsoft has today released the first cumulative update for Windows 10 April 2018 Update (version 1803). The direct download links for Windows 10 KB4103721 are also available, which means you can upgrade your computer manually. Needless to say, you can also download the cumulative update via the Settings app. Windows 10 KB4103721 (Build 17134.48) is the first cumulative update for the newest version of the operating system. Microsoft has fixed a lot of bugs and glitches with today’s update. If you’re one of the first users who upgraded to new version of Windows, you probably noticed some bugs and glitches. Microsoft allowed users to manually upgrade their devices to Windows 10 version 1803 (April 2018 Update) on April 2018. Get caught up on OUR FORUM.